From bd323d6fab6dff09642986bda2aa7b5b495f7dbe Mon Sep 17 00:00:00 2001
From: Nikolaj Bjorner <nbjorner@microsoft.com>
Date: Tue, 13 Feb 2024 20:28:18 +0700
Subject: [PATCH] save

---
 src/ast/sls/bv_sls.cpp        |  6 +++---
 src/ast/sls/sls_valuation.cpp | 11 ++++++-----
 src/ast/sls/sls_valuation.h   |  4 +++-
 3 files changed, 12 insertions(+), 9 deletions(-)

diff --git a/src/ast/sls/bv_sls.cpp b/src/ast/sls/bv_sls.cpp
index 90058607ebc..33b63537635 100644
--- a/src/ast/sls/bv_sls.cpp
+++ b/src/ast/sls/bv_sls.cpp
@@ -55,6 +55,7 @@ namespace bv {
                 unsigned index = m_rand(m_repair_down.size());
                 unsigned expr_id = m_repair_down.elem_at(index);
                 auto e = m_terms.term(expr_id);
+                IF_VERBOSE(20, verbose_stream() << "d " << mk_bounded_pp(e, m, 1) << "\n");
                 if (eval_is_correct(e))
                     m_repair_down.remove(expr_id);
                 else
@@ -64,6 +65,7 @@ namespace bv {
                 unsigned index = m_rand(m_repair_up.size());
                 unsigned expr_id = m_repair_up.elem_at(index);
                 auto e = m_terms.term(expr_id);
+                IF_VERBOSE(20, verbose_stream() << "u " << mk_bounded_pp(e, m, 1) << "\n");
                 if (eval_is_correct(e))
                     m_repair_up.remove(expr_id);
                 else
@@ -76,7 +78,6 @@ namespace bv {
     }
 
     bool sls::try_repair_down(app* e) {
-        IF_VERBOSE(20, verbose_stream() << "d " << mk_bounded_pp(e, m, 1) << "\n");
         unsigned n = e->get_num_args();
         unsigned s = m_rand(n);
         for (unsigned i = 0; i < n; ++i) 
@@ -97,7 +98,6 @@ namespace bv {
     }
 
     bool sls::try_repair_up(app* e) {
-        IF_VERBOSE(20, verbose_stream() << "u " << mk_bounded_pp(e, m, 1) << "\n");
         m_repair_up.remove(e->get_id());
         if (m_terms.is_assertion(e)) {
             m_repair_down.insert(e->get_id());
@@ -114,7 +114,7 @@ namespace bv {
         if (m.is_bool(e))
             return m_eval.bval0(e) == m_eval.bval1(e);
         if (bv.is_bv(e))
-            return 0 == memcmp(m_eval.wval0(e).bits.data(), m_eval.wval1(e).data(), m_eval.wval0(e).nw * 8);
+            return 0 == m_eval.wval0(e).eq(m_eval.wval1(e));
         UNREACHABLE();
         return false;
     }
diff --git a/src/ast/sls/sls_valuation.cpp b/src/ast/sls/sls_valuation.cpp
index bb15c8da389..a4560289976 100644
--- a/src/ast/sls/sls_valuation.cpp
+++ b/src/ast/sls/sls_valuation.cpp
@@ -55,13 +55,14 @@ namespace bv {
             m.compare(bits.data(), nb, hi.data(), nb) < 0;
     }
 
-    bool sls_valuation::eq(sls_valuation const& other) const {
-        SASSERT(bw == other.bw);
-        auto c = 0 == memcmp(bits.data(), other.bits.data(), bw / 8);
+    bool sls_valuation::eq(svector<digit_t> const& other) const {
+        auto c = 0 == memcmp(bits.data(), other.data(), bw / 8);
         if (bw % 8 == 0 || !c)
             return c;
-        NOT_IMPLEMENTED_YET();
-        return false;
+        for (unsigned i = 8 * (bw / 8); i < bw; ++i)
+            if (get(bits, i) != get(other, i))
+                return false;
+        return true;
     }
 
     void sls_valuation::clear_overflow_bits(svector<digit_t>& bits) const { 
diff --git a/src/ast/sls/sls_valuation.h b/src/ast/sls/sls_valuation.h
index bdc731bfddb..1bf61698ce3 100644
--- a/src/ast/sls/sls_valuation.h
+++ b/src/ast/sls/sls_valuation.h
@@ -46,7 +46,9 @@ namespace bv {
         void clear_overflow_bits(svector<digit_t>& bits) const;
         bool can_set(svector<digit_t> const& bits) const;
 
-        bool eq(sls_valuation const& other) const;
+        bool eq(sls_valuation const& other) const { return eq(other.bits); }
+
+        bool eq(svector<digit_t> const& other) const;
 
         bool gt(svector<digit_t> const& a, svector<digit_t> const& b) const {
             return 0 > memcmp(a.data(), b.data(), num_bytes());